ZyXEL Communications XS1920 Series User Manual page 190

Figure 133 Advanced Application > Multicast > IPv6 Multicast > MLD Snooping-proxy > VLAN
The following table describes the fields in the above screen.
Table 86 Advanced Application > Multicast > IPv6 Multicast > MLD Snooping-proxy > VLAN
LABEL
VID
Upstream
Query Interval
Maximum Response Delay
Robustness Variable
Chapter 24 Multicast
DESCRIPTION
Enter the ID number of the VLAN on which you want to enable MLD snooping-
proxy and configure related settings.
Enter the amount of time (in miliseconds) between general query messages sent
by the router connected to the upstream port. This value should be exactly the
same as what's configured in the connected multicast router.
This value is used to calculate the amount of time an MLD snooping membership
entry (learned only on the upstream port) can remain in the forwarding table.
When an MLD Report message is received, the Switch sets the timeout period of
the entry to be T = (QI*RV) + MRD, where T = Timeout, QI = Query Interval, RV
= Robustness Variable, and MRD = Maximum Response Delay.
Enter the amount of time (in miliseconds) the router connected to the upstream
port waits for a response to an MLD general query message. This value should
be exactly the same as what's configured in the connected multicast router.
This value is used to calculate the amount of time an MLD snooping membership
entry (learned only on the upstream port) can remain in the forwarding table.
When an MLD Report message is received, the Switch sets the timeout period of
the entry to be T = (QI*RV) + MRD, where T = Timeout, QI = Query Interval, RV
= Robustness Variable, and MRD = Maximum Response Delay.
When an MLD Done message is received, the Switch sets the entry's lifetime to
be the product of Last Member Query Interval and Robustness Variable
Enter the number of queries. A multicast address entry (learned only on an
upstream port by snooping) is removed from the forwarding table when there is
no response to the configured number of queries sent by the router connected to
the upstream port. This value should be exactly the same as what's configured in
the connected multicast router.
This value is used to calculate the amount of time an MLD snooping membership
entry (learned only on the upstream port) can remain in the forwarding table.
XS1920 Series User's Guide
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